Cho 2 phan so co tong bang -3 va tich bang 12/5. Tinh tong cac so nghich dao cua 2 phan so do

cho phan so co tong bang -3 va tich bang 12/5 ting tong nghich dao cua 2 phan so do?

1.cho hai phan so co tong bang -3 va tich bang 12/5. tinh tong cac nghich daao cua hai phan so do

2.cho hai phan so toi gian a/b va c/d. biet a/b+c/d E z. chung minh /b/=/d/

cho 2 phan so co tong bang 2015 lan tich cua chung

tinh tong cac phan so nghich dao cua chung

Tinh tong cua cac phan so bang 28/63 ma co tu va mau deu la so co 3 chu so

hai so tu nhien co tong bang 2011 va giua chung co tat ca 9 so chan tim hai so do

hai so tu nhien co tong bang 2009 va giua chung co tat ca 5 so le

tim hai so tu nhien co tong cua chung bang 636 va giua chung co tat ca 11 so tu nhien khac

tim hai phan so biet tong cua bang 5/6 va hieu cua chung bang 1/6

tim hai phan so biet tong cua chung bang 17/20 va hieu cua chung bang 7/20

Tinh tong cua cac phan so bang 28/63 ma co tu va mau deu la so co 3 chu so ai lam nhanh va dung mik tk cho

tim 1 phan so biet tong cua tu  tu so va mau so cua phan so do bang 135 va biet phan so do co gia tri bang 2/3